/**
 * Copyright 2011 the original author or authors
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package it.av.spring.security;

import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;

/**
 * Simply the acces to to SpringSecurityContext
 * 
 * @author <a href='mailto:a.vincelli@gmail.com'>Alessandro Vincelli</a>
 * 
 */
public final class SecurityContextHelper {

    private SecurityContextHelper() {
    }

    /**
     * 
     * @return the authenticated user
     */
    public static UserDetailsImpl getAuthenticatedUser() {
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
        if (authentication != null) {
            return (UserDetailsImpl) authentication.getPrincipal();
        }
        return null;
    }

    /**
     * 
     * @return true if the current user is authenticated
     */
    public static boolean isAuthenticatedUser() {
        if (SecurityContextHolder.getContext().getAuthentication() != null) {
            return true;
        }
        return false;
    }

}
